diff --git a/owncloudComLibrary/src/main/java/com/owncloud/android/lib/resources/files/DownloadRemoteFileOperation.kt b/owncloudComLibrary/src/main/java/com/owncloud/android/lib/resources/files/DownloadRemoteFileOperation.kt
index fddeb692..793cca5b 100644
--- a/owncloudComLibrary/src/main/java/com/owncloud/android/lib/resources/files/DownloadRemoteFileOperation.kt
+++ b/owncloudComLibrary/src/main/java/com/owncloud/android/lib/resources/files/DownloadRemoteFileOperation.kt
@@ -48,7 +48,7 @@ import java.util.concurrent.atomic.AtomicBoolean
 class DownloadRemoteFileOperation(
     private val remotePath: String,
     localFolderPath: String
-) : RemoteOperation<Any>() {
+) : RemoteOperation<Unit>() {
 
     private val mCancellationRequested = AtomicBoolean(false)
     private val mDataTransferListeners: MutableSet<OnDatatransferProgressListener> = HashSet()
@@ -58,8 +58,8 @@ class DownloadRemoteFileOperation(
     var etag: String = ""
         private set
 
-    override fun run(client: OwnCloudClient): RemoteOperationResult<Any> {
-        var result: RemoteOperationResult<Any>
+    override fun run(client: OwnCloudClient): RemoteOperationResult<Unit> {
+        var result: RemoteOperationResult<Unit>
 
         // download will be performed to a temporal file, then moved to the final location
         val tmpFile = File(tmpPath)
@@ -77,8 +77,8 @@ class DownloadRemoteFileOperation(
     }
 
     @Throws(Exception::class)
-    private fun downloadFile(client: OwnCloudClient, targetFile: File): RemoteOperationResult<Any> {
-        val result: RemoteOperationResult<Any>
+    private fun downloadFile(client: OwnCloudClient, targetFile: File): RemoteOperationResult<Unit> {
+        val result: RemoteOperationResult<Unit>
         var it: Iterator<OnDatatransferProgressListener>
         var fos: FileOutputStream? = null
         var bis: BufferedInputStream? = null
diff --git a/owncloudComLibrary/src/main/java/com/owncloud/android/lib/resources/files/services/FileService.kt b/owncloudComLibrary/src/main/java/com/owncloud/android/lib/resources/files/services/FileService.kt
index ec0b7421..0a43d0f8 100644
--- a/owncloudComLibrary/src/main/java/com/owncloud/android/lib/resources/files/services/FileService.kt
+++ b/owncloudComLibrary/src/main/java/com/owncloud/android/lib/resources/files/services/FileService.kt
@@ -44,7 +44,7 @@ interface FileService : Service {
     fun downloadFile(
         remotePath: String,
         localTempPath: String
-    ): RemoteOperationResult<Any>
+    ): RemoteOperationResult<Unit>
 
     fun refreshFolder(
         remotePath: String
diff --git a/owncloudComLibrary/src/main/java/com/owncloud/android/lib/resources/files/services/implementation/OCFileService.kt b/owncloudComLibrary/src/main/java/com/owncloud/android/lib/resources/files/services/implementation/OCFileService.kt
index d49533bb..55892f4a 100644
--- a/owncloudComLibrary/src/main/java/com/owncloud/android/lib/resources/files/services/implementation/OCFileService.kt
+++ b/owncloudComLibrary/src/main/java/com/owncloud/android/lib/resources/files/services/implementation/OCFileService.kt
@@ -61,7 +61,7 @@ class OCFileService(override val client: OwnCloudClient) : FileService {
     override fun downloadFile(
         remotePath: String,
         localTempPath: String
-    ): RemoteOperationResult<Any> =
+    ): RemoteOperationResult<Unit> =
         DownloadRemoteFileOperation(
             remotePath = remotePath,
             localFolderPath = localTempPath